mirror of https://github.com/F-Stack/f-stack.git
363 lines
6.4 KiB
ArmAsm
363 lines
6.4 KiB
ArmAsm
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2018 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <machine/asmacros.h>
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#include <machine/cputypes.h>
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#include <machine/pmap.h>
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#include <machine/specialreg.h>
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#include "assym.inc"
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.text
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ENTRY(copyout_fast)
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pushl %ebp
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movl %esp, %ebp
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pushl %esi
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pushl %edi
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pushl %ebx
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movl $copyout_fault,%edx
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movl 20(%ebp),%ebx /* KCR3 */
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%edi
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cli
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movl PCPU(TRAMPSTK),%esi
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movl PCPU(COPYOUT_BUF),%eax
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subl $4,%esi
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movl %eax,(%esi)
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movl 12(%ebp),%eax /* udaddr */
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subl $4,%esi
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movl %eax,(%esi)
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movl 16(%ebp),%eax /* len */
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subl $4,%esi
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movl %eax,(%esi)
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subl $4, %esi
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movl %edi, (%esi)
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movl 8(%ebp),%eax /* kaddr */
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subl $4,%esi
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movl %eax,(%esi)
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movl PCPU(COPYOUT_BUF),%eax
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subl $4,%esi
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movl %eax,(%esi)
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movl 16(%ebp),%eax /* len */
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subl $4,%esi
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movl %eax,(%esi)
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movl %esp,%eax
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movl %esi,%esp
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/* bcopy(%esi = kaddr, %edi = PCPU(copyout_buf), %ecx = len) */
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popl %ecx
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popl %edi
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popl %esi
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rep; movsb
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popl %edi
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movl %edi,%cr3
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/* bcopy(%esi = PCPU(copyout_buf), %edi = udaddr, %ecx = len) */
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popl %ecx
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popl %edi
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popl %esi
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rep; movsb
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movl %ebx,%cr3
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movl %eax,%esp
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sti
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xorl %eax,%eax
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popl %ebx
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popl %edi
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popl %esi
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leave
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ret
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END(copyout_fast)
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ENTRY(copyin_fast)
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pushl %ebp
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movl %esp, %ebp
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pushl %esi
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pushl %edi
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pushl %ebx
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movl $copyout_fault,%edx
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movl 20(%ebp),%ebx /* KCR3 */
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%edi
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cli
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movl PCPU(TRAMPSTK),%esi
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movl PCPU(COPYOUT_BUF),%eax
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subl $4,%esi
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movl %eax,(%esi)
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movl 12(%ebp),%eax /* kaddr */
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subl $4,%esi
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movl %eax,(%esi)
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movl 16(%ebp),%eax /* len */
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subl $4,%esi
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movl %eax,(%esi)
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movl 8(%ebp),%eax /* udaddr */
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subl $4,%esi
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movl %eax,(%esi)
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movl PCPU(COPYOUT_BUF),%eax
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subl $4,%esi
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movl %eax,(%esi)
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movl 16(%ebp),%eax /* len */
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subl $4,%esi
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movl %eax,(%esi)
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movl %esp,%eax
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movl %esi,%esp
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movl %edi,%cr3
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/* bcopy(%esi = udaddr, %edi = PCPU(copyout_buf), %ecx = len) */
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popl %ecx
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popl %edi
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popl %esi
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rep; movsb
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movl %ebx,%cr3
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/* bcopy(%esi = PCPU(copyout_buf), %edi = kaddr, %ecx = len) */
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popl %ecx
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popl %edi
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popl %esi
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rep; movsb
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movl %eax,%esp
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sti
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xorl %eax,%eax
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popl %ebx
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popl %edi
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popl %esi
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leave
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ret
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END(copyin_fast)
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ALIGN_TEXT
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copyout_fault:
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movl %eax,%esp
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sti
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movl $EFAULT,%eax
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popl %ebx
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popl %edi
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popl %esi
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leave
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ret
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ENTRY(fueword_fast)
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pushl %ebp
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movl %esp,%ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl 8(%ebp),%ecx /* from */
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%eax
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movl $fusufault,%edx
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movl 16(%ebp),%ebx
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movl %esp,%esi
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cli
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movl PCPU(TRAMPSTK),%esp
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movl %eax,%cr3
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movl (%ecx),%eax
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movl %ebx,%cr3
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movl %esi,%esp
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sti
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movl 12(%ebp),%edx
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movl %eax,(%edx)
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xorl %eax,%eax
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popl %edi
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popl %esi
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popl %ebx
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leave
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ret
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END(fueword_fast)
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ENTRY(fuword16_fast)
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pushl %ebp
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movl %esp,%ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl 8(%ebp),%ecx /* from */
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%eax
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movl $fusufault,%edx
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movl 12(%ebp),%ebx
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movl %esp,%esi
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cli
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movl PCPU(TRAMPSTK),%esp
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movl %eax,%cr3
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movzwl (%ecx),%eax
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movl %ebx,%cr3
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movl %esi,%esp
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sti
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popl %edi
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popl %esi
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popl %ebx
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leave
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ret
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END(fuword16_fast)
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ENTRY(fubyte_fast)
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pushl %ebp
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movl %esp,%ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl 8(%ebp),%ecx /* from */
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%eax
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movl $fusufault,%edx
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movl 12(%ebp),%ebx
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movl %esp,%esi
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cli
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movl PCPU(TRAMPSTK),%esp
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movl %eax,%cr3
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movzbl (%ecx),%eax
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movl %ebx,%cr3
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movl %esi,%esp
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sti
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popl %edi
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popl %esi
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popl %ebx
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leave
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ret
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END(fubyte_fast)
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ALIGN_TEXT
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fusufault:
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movl %esi,%esp
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sti
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xorl %eax,%eax
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decl %eax
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popl %edi
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popl %esi
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popl %ebx
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leave
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ret
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ENTRY(suword_fast)
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pushl %ebp
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movl %esp,%ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%eax
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movl $fusufault,%edx
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movl 8(%ebp),%ecx /* to */
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movl 12(%ebp),%edi /* val */
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movl 16(%ebp),%ebx
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movl %esp,%esi
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cli
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movl PCPU(TRAMPSTK),%esp
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movl %eax,%cr3
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movl %edi,(%ecx)
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movl %ebx,%cr3
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movl %esi,%esp
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sti
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xorl %eax,%eax
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popl %edi
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popl %esi
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popl %ebx
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leave
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ret
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END(suword_fast)
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ENTRY(suword16_fast)
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pushl %ebp
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movl %esp,%ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%eax
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movl $fusufault,%edx
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movl 8(%ebp),%ecx /* to */
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movl 12(%ebp),%edi /* val */
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movl 16(%ebp),%ebx
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movl %esp,%esi
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cli
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movl PCPU(TRAMPSTK),%esp
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movl %eax,%cr3
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movw %di,(%ecx)
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movl %ebx,%cr3
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movl %esi,%esp
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sti
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xorl %eax,%eax
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popl %edi
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popl %esi
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popl %ebx
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leave
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ret
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END(suword16_fast)
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ENTRY(subyte_fast)
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pushl %ebp
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movl %esp,%ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl PCPU(CURPCB),%eax
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movl PCB_CR3(%eax),%eax
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movl $fusufault,%edx
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movl 8(%ebp),%ecx /* to */
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movl 12(%ebp),%edi /* val */
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movl 16(%ebp),%ebx
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movl %esp,%esi
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cli
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movl PCPU(TRAMPSTK),%esp
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movl %eax,%cr3
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movl %edi,%eax
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movb %al,(%ecx)
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movl %ebx,%cr3
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movl %esi,%esp
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sti
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xorl %eax,%eax
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popl %edi
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popl %esi
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popl %ebx
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leave
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ret
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END(subyte_fast)
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